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# Copyright (c) 2023, PostgreSQL Global Development Group
# Test WAL replay for CREATE DATABASE .. STRATEGY WAL_LOG.
use strict;
use warnings;
use PostgreSQL::Test::Cluster;
use PostgreSQL::Test::Utils;
use Test::More;
my $node = PostgreSQL::Test::Cluster->new('node');
$node->init;
$node->start;
# This checks that any DDLs run on the template database that modify pg_class
# are persisted after creating a database from it using the WAL_LOG strategy,
# as a direct copy of the template database's pg_class is used in this case.
my $db_template = "template1";
my $db_new = "test_db_1";
# Create table. It should persist on the template database.
$node->safe_psql("postgres",
"CREATE DATABASE $db_new STRATEGY WAL_LOG TEMPLATE $db_template;");
$node->safe_psql($db_template, "CREATE TABLE tab_db_after_create_1 (a INT);");
# Flush the changes affecting the template database, then replay them.
$node->safe_psql("postgres", "CHECKPOINT;");
$node->stop('immediate');
$node->start;
my $result = $node->safe_psql($db_template,
"SELECT count(*) FROM pg_class WHERE relname LIKE 'tab_db_%';");
is($result, "1",
"check that table exists on template after crash, with checkpoint");
# The new database should have no tables.
$result = $node->safe_psql($db_new,
"SELECT count(*) FROM pg_class WHERE relname LIKE 'tab_db_%';");
is($result, "0",
"check that there are no tables from template on new database after crash"
);
done_testing();
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